diff --git a/flake.nix b/flake.nix
index 11cf54a..70bcd98 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,7 +22,10 @@
       allowUnfree = { nixpkgs.config.allowUnfree = true; };
       system = "x86_64-linux";
       overlay-unstable = final: prev: {
-        unstable = nixpkgs-unstable.legacyPackages.${prev.system};
+        unstable = import nixpkgs-unstable {
+          inherit system;
+          config.allowUnfree = true;
+        };
       };
     in {
       nixosConfigurations = {